Shuttle brush and holder



April 20, 1954 MATSQN SHUTTLE BRUSH AND HOLDER Filed May 15, 1950 IN VEN TOR.

Jo l m A. atson ATTORNE Y5 ild n wl Patented Apr. 20, 1954 UNITED STATES PATENT OFFICE SHUTTLE BRUSH AND HOLDER John A. Matson, Troy, N. H. Application May 16, 1950, Serial No. 162,183

This invention relates to shuttles, especially to those used in weaving woolen yarn or other similar yarn which carries along a certain amount of short fibre or fuzz which may get into the shuttle eye and clog it and for any other shuttles where a gentle tension or holding back von the yarn is desirable.

In the past, and in addition to the various types of friction pads in the shuttle eye and fur which engages the yarn mass on the bobbin, bristle brushes extending into the bobbin chamber in position to intercept the thread have been extensively used.

The usual method of positioning these brushes is to bore a hole through the side of the shuttle leading into the bobbin chamber and then force a bunch of bristles into this hole either smearing the inside of the hole or the outside of the bristles with adhesive so that they stay in position.

When the bristles wear down and it is neces- 1 sary to replace them, it is a difficult task to clear the hole of bristles and adhesive and to do a good job, the shuttle must be taken out of service into a properly equipped shop.

This device is a clamp and is an improvement 'on the device shown in my patent of March 20,

1945, No. 2,371,701, and includes a receiving member which goes into a suitable brush hole extending in from the outer face of a side wall of a shuttle and which has a countersunk head recess in the outer face which forms an annular shoulder with a smaller sized shank hole which is smooth on its curved surface and extends through that side wall, the receiving member having a head seated in the head recess and an inwardly projecting tubular shank seated in the shank hole, smooth on the outside, and having a dead 'end hole with interior threads, together with a brush holding member which has a head on the inside of the side wall and a shank with outside threads 'to engage the inside threads in the receiving member shank and which carries a bunch of bristles. The receiving member may be preferably of some suitable plastic such as poly-styrene but might be of metal, but the brush holding member is preferably made of a thermo-plastic such as poly-styrene into which a bunch of bristles is permanently fastened.

When the bristles of the bristle holder wear down, they with their holder can be thrown away and replaced by another similar holder or both the receiving and holding member can be thrown away.

The entire brush includesv a bunch of bristles held by a brush holding member having a head to engage the inner face of a shuttle side wall 4 Claims. (Cl. 139--218) and a shank with outside threads to engage the inside threads of a tubular shank of a receiving member having a head to engage the part of the outer face of the same shuttle side wall represented by the countersunk head recess part of the brush hole.

The receiving member can be made without a tubular shank, but with a shank hole in the head with inside threads.

Preferably the receiving member can be used again, but the brush holding member cannot be reused.

Preferably I use bristles made of nylon or some suitable similar cellulose-acetate plastic, bent and formed in the plastic bristle holding member when it is being formed, both being set together while the plastic is soft in any conventional injection mold machine, the bristles being bent to form a loop into which the plastic is forced.

However, I can use a brush holdingmember in which straight bristles such as hog bristles, not bent, are held in place as by being fastened in by means of an adhesive.

I find that bristles of nylon or some similar material will wear many times as long as hog bristles and in my preferred form of device, I use such synthetic bristles which have been cut to'twice the desired length, then bent in the middle and set permanently in the bristle holder.

The receiving member may be made of a light metal such as aluminum, or magnesium and should be turnable while the brush holding member can be provided with fiat edges, pin holes, a washer or with a roughened inner face of its head to prevent turning, while the clamp members are being screwed together.

This device is an improvement on my Patent No. 2,371,701 because that shows a three part device comprising expendable "removable bristles with a bend, held by thread, passed through a hole in a bristle holding member in such a way that when such member is screwed together with a receiving member the bend in the bristles is expanded and the bristles are held in place; while this is a two part device, one part being expandable, the parts being clamped together through the wall of a shuttle with the bristles at any desired angle with the thread.

In the drawings,

Fig. 1 is a plan view of the eye end of a shuttle with my device in place.

Fig. 2 is *an elevation from the side of the shuttle eye of the same shuttle shown in Fig. 1,

her and Fig. 4 is an elevation of the receiving member.

Fig. 5 is a sectional view through part of a shuttle wall and through the receiving member, and the brush holding member, as in Figs. 3 and 6.

Fig. 6 is a plan view of the top or head of a brush holding member of the type shown in Figs. 1 to 5.

Fig. Tis a view, of the bottom or shank end of a brush holding member with a disk shaped head.

Fig. 8 is a plan view or top view of a brush.

holding member with a disk shaped head with pin holes.

Fig. 9 is a section on a plane which runs through the axis of a brush holding member of a modification of the type shown inFig; 5.

Fig. 10 is a view, partly in section, on a plane indicated by M and 42, while the outer face of side 42 is indicated by 49 and the inner face by 48, while itis what is known as the thread groove in which the thread runs when the shuttle is travelling in a loomtowards the outside of the loom, as. distinguished. from the inside.

Hrepresents a bristle brush unit of which there iay be one or two on each side, each positioned in a brush hole G and each having a bunch of bristles indicated by P'.

As shown in Fig. 5, these. bristles are bent in the middle at 'i' and tied together atB with a string, of a suitable kind. The brush hole G has extending in from the outer face 69 abrush hole head. recess i'i whiclrforms, an annular shoulder ill with a face 35 and. there is asmaller shank bore part it which extends through to the inner side 48 and which has ,a smooth curved surface l5. The head recess i'l is cylindrioaland. has a smooth curved face i i.

F represents a receiving member with a disk shaped head iiil, smooth on its curved face 6! to fit not too closely, inthe head recess, I'l. It has a turning slot 61 whereby it can be turned by a screw driver and its inner, face 63 rests against the face 45 of g the recess, there being also an integral tubular shank 62 which is smooth on its outside 58' towfitninto the bore part 15. This shank is of tubular formand has a dead end hole M with interior screw threads 55.

-However the shank can be omitted as shown in Fig. 16.

M is a brush holding member which includes a head I shown as having a flat face 6 to engage the inside face 38 of the shuttle side and a, shank 2 having outside threads 4 which engage the inside threads 65 of the tubular shank 82. This shank 2 is of such length thatitsrend l3, preferably, does not quite reach the dead end 64.

As shown in Fig. 6, the head M has twofiat sides 35, and is bevelled at its curved ends 5, 5. This brush holding, member Mris preferably made of a suitablevplastic. into which the bunch of bristles P can be molded, when the member M is being formed- Preferably these bristles P are tied at 8 but there is a loop left at l which is filled with the plastic during the molding and setting operation.

This bunch of bristles P may be set at an angle with the bristle holding member head i and in such a way that they can be directed down and outward or up and outward, depending on whether or not they are to go under the bobbin or over the bobbin.

The bristle holding member M with bristles P is put in the right position on the inner face of a side in a desired direction and may be then held inthat position between fingers while the receiving member such as F is turned as with a screw driver in slot 5! until the head is forced up against the face of annular shoulder stand the face i of brush holding member Ivl presses up tight against the inner face In Fig. '7, I show a brush holding member such as N with a face be similar to face 25. This face 58, is formed with ridges 5%, 51, which help to prevent it from turning as the receiving member is screwed onto the threaded shank 522, thus pressing ridges into the wood. Figs. '7, 8, and 9 show a round or disk shaped head.

As shown in Fig. 8, I may use a brush holding member head R whichls bevelled at 25 and has two holes 28, into which a pin or pins of a suitable tool or wrench can be inserted to keep it from turning.

In Fig. 9, is shown a brush holding member A which may be of plastic or may be of some other suitable material, provided with a bristle hole 82 into which a brush B of straight bristles 8! can be inserted and held in place as by an adhesive which preferably surrounds each bristle so as to keep the whole firmly in place.

Z represents a light adhesive or a washer which may be of rubber or other suitable friction material to keep the head of the brush holding meniber'from turning with the receiving member especially when separating the brush holding member therefrom to throw it away. A washer W Fig. 16 can be used inside the receiving member head in case the head recess is bored too deep.

In Fig. 10 is shownv a construction in which there is a head recess E2 into which is seated a receiving member 2: which consists entirely of what might be called a head it or a combination head and shank. This receiving member is provided with a dead end hole having interior screw threads ll which are engaged by the exterior screw threads on the shank it of a brush holding member L which carries any suitable bunch of bristles O and has a head it to engage the inner face of the shuttle side wall.

The head of the brush member should entirely cover, the shank hole such as id on, the inner face of the side wall as shown by the dotted lines in Fig. 6, and if a head such as M is used, preferably its fiat sides 3'5, 33' should be vertical so as to be parallel with the top and bottom faces of the shuttle as shown in Fig. 2 and its front and back ends 5 and 5. should be vrounded or sloping so that no lint will get inhole iii and will not scrape off on the edgesoftt, as the thread unwinds spirally from the bobbin.

For both receiving member and brush holding member, I prefer to use a. plasticor light metal such as aluminum or an alloy which will not upset the balance of the shuttle and, if the outer face of, the shuttle wears down, the head of the receiving member willalso Wear down.

However, I may use metal. for the receiving member with interior threads and a plastic brush holding member of plastic such as shown at V in Fig. 11, with a head 99 and a shank 9| which has no exterior threads until the receiving member is screwed on to it cutting threads in 9? as it is turned.

The head of the receiving member and of the brush holding member may both be seated in a recess or one may be so seated and the other not so seated, but in any case, there should be a dead end hole with interior screw threads in the receiving member and a shank which has exterior screw threads engaging such interior screw threads when in use combined with a head into which is permanently fixed a bunch of bristles, such head and shank forming a brush holding member.

While preferably this brush holding member is made of a plastic such as polystyrene, it might be of any other suitable relatively soft plastic material, such for instance, as artificial rubber of the butadiene type forced in and around the bristles and then hardened or set.

I claim:

1. The combination with a weaving shuttle having an outlet eye, a bobbin chamber between its side walls and having a. plurality of brush holes through its side walls, each brush hole having a countersunk cylindrical head recess in the outer face of a side wall and a smaller shank bore part with a smooth curved face extending through the side wall thereby leaving an annular shoulder; of a plurality of friction members, each including a plastic receiving member having a disk shaped head to fit the countersunk head recess and having a turning slot together with a tubular shank,

smooth on the outside to fit the smaller shank bore part of the brush hole and provided with interior screw threads; a brush unit comprising a thermo-plastic bunch holding member having a shank with exterior screw threads to fit the interior threads of the receiving member tubular shank and a head to engage the inner face of the same side wall of the shuttle, such bunch holding member including a bunch of bristles of suitable plastic bent and extending into the bunch holding member and permanently fastened therein by being molded thereinto, extending diagonally inward towards the shuttle axis and outward towards the shuttle point which is proximate the shuttle eye whereby the heads of the receiving and bunch holding members can be clamped in place between the face of the annular shoulder of the brush hole and the inner face of a side wall.

2. The combination with a weaving shuttle having an outlet eye, a bobbin chamber between its side walls and having a plurality of brush holes through its side walls, each brush hole having a countersunk cylindrical head recess in the outer face of a side wall and a smaller shank bore part with a smooth curved face extending through the side Wall thereby leaving an annular shoulder; of a plurality of friction members, each including a receiving member having a disk shaped head to fit the countersunk head recess and having a turning slot together with a tubular shank, smooth on the outside to fit the smaller shank bore part of the brush hole and provided with interior screw threads; a brush unit comprising a bunch holding member having a shank with exterior screw threads to fit the interior threads of the receiving member tubular shank and a head to engage the inner face of the same side wall of the shuttle, such bunch holding member including a bunch of bristles extending into the bunch holding member and permanently fastened therein, extending diagonally inward towards the shuttle axis and outward towards the shuttle point which is proximate the shuttle eye.

3. The combination with a weaving shuttle having an outlet eye; a bobbin chamber between its side walls and having a plurality of brush holes through its side walls, each brush hole having a countersunk cylindrical head recess in the outer face of a side wall and a smaller shank bore part with a smooth curved face extending through the side Wall thereby leaving an annular shoulder; of a plurality of friction members, each including a receiving member having a disk shaped head to fit the countersunk head recess and provided with interior screw threads; a brush unit comprising a bunch holding member having a shank with exterior screw threads to fit the interior threads of the receiving member disk shaped head, and a headto engage the inner face of the same side wall of the shuttle, such bunch holding member including a bunch of bristles extending into the bunch holding member and permanently fastened therein, extending diagonally inward towards the shuttle axis and outward towards the shuttle point which is proximate the shuttle eye.

4. For use in a weaving shuttle, a brush unit comprising a shank with exterior screw threads at one end and a head at the other, such brush unit including a bunch of bristles extending into the head at an angle with the shank and being inseparably fastened thereinto such head being of greater diameter than the shank and the face of the head which adjoins the shank being formed with corrugations.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,780,221 Buchmann Nov. 4, 1930 1,959,274 Mar May 15, 1934 2,227,635 Dean Jan. 7, 1941 2,371,701 Matson Mar. 20, 1945 FOREIGN PATENTS Number Country Date 648,303 France Aug. 13, 1928 

